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HIGH PERFORMANCE COMPUTING
“There is a requirement to balance the compute and the I/O to make the system efficient, and to get intelligent scheduling to ensure that time is not wasted – there isn’t a tier one provider that does all that”
Disruptive technology The CooLMUC 3 system supplied by Megware not only cools compute nodes but also features the latest generation of Intel Xeon Phi, which stands out for an integrated fabric and is directly interconnected via the Intel Omni-Path network.
With the huge amount of variation
in HPC systems based on the kind of applications they might run, the number of users, hardware and the composition of the nodes system integrators must make sure they collaborate with their clients to ensure that the system is suited for the particular use case. ‘There is an increasing propensity for
to cool various processor technologies directly with hot water. In addition, an absorption chiller was used to efficiently reuse residual heat to generate process cooling, in order to cool existing servers in additional racks. ‘The new CooLMUC 3 system
outperforms its predecessors in a number of respects, including its key feature of cooling in thermally insulated racks all compute and login nodes, power supply units, and Omni-Path switches directly with hot water, a combination the likes of which has never been seen before’ commented Axel Auweter, head of HPC development at Megware. Hot water cooling relies on the idea
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that warm water does not need additional chilling equipment, so energy-efficiency can be increased as there is less of a requirement for cooling infrastructure. This can be further increased through the use of evaporative cooling or in the case of CooLMUC 3 an absorption chiller. ‘Even at a cooling water temperature of 40 degrees Celsius and a room temperature of 25 degrees Celsius, a maximum of just three per cent waste heat is produced in the ambient air. We’ve carried out a great deal of development work and are now more ready than ever to supply highly efficient, environmentally- friendly HPC technologies globally,’ added Auweter.
organisations to buy and grow systems, so we help our customers to think ahead about the future use of their system. It is important for customers to be mindful of where they might be in three years’ time, where they are now and the path from one to the other. We discuss with them any future technology trends that may impact the way a system evolves and we have successful partnerships with World- leading vendors to help assist us in this exercise,’ stated Fielden. ‘It is a collaborative approach
working with customers to select the best technology for their needs. No two customers have exactly the same requirements; there are always individual nuances that may give them an extra five per cent efficiency on their particular HPC system,’ Fielden added. The job of integrators is becoming
increasingly complex as there are many new and disruptive technologies that can now be applied to new HPC systems. It is the job of an integrator to help select technologies that will help researchers
December 2017/January 2018 Scientific Computing World 5
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